Prefix that the source prefix is mapped to. Here you can configure either an explicit prefix such as 2001:db8::/32, or the placeholder :: with the appropriate prefix length in the case that the provider assigns a dynamic prefix.
- SNMP ID:
 - 2.70.5.30.3
 - Console path:
 - Setup > IPv6 > Firewall > NPTV6
 - Possible values:
 Max. 43 characters from [A-F][a-f][0-9]:./